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SOLAR POWER SYSTEMS, NET (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
SOLAR POWER SYSTEMS |  |  |
Accumulated depreciation | $ (16,227) | $ (15,234) |
Solar power systems, net | 54,898 | 63,964 |
Transferred solar power systems to project assets |  | 4,782 | $ 1,362,037
Solar power systems |  |  |
SOLAR POWER SYSTEMS |  |  |
Depreciation expense | 3,756 | 5,683 | $ 16,492
Solar power systems in operation |  |  |
SOLAR POWER SYSTEMS |  |  |
Solar power systems, gross | 66,641 | 74,488 |
Solar power systems under construction |  |  |
SOLAR POWER SYSTEMS |  |  |
Solar power systems, gross | $ 4,484 | $ 4,710 |

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References No definition available. + Details
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- Definition Amount after accumulated depreciation of ground-mounted projects and roof top systems intend to be held for use. + References No definition available. + Details
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- Definition Amount before accumulated depreciation, depletion and amortization of solar power systems used in the normal conduct of business. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Represents the amount of solar power systems reclassified to project assets. + References No definition available. + Details
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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- Details
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